402453540 has 144 divisors (see below), whose sum is σ = 1305472896. Its totient is φ = 100108800.

The previous prime is 402453509. The next prime is 402453553. The reversal of 402453540 is 45354204.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 168555 + ... + 170925.

It is an arithmetic number, because the mean of its divisors is an integer number (9065784).

Almost surely, 2^402453540 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 402453540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (652736448).

402453540 is an abundant number, since it is smaller than the sum of its proper divisors (903019356).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

402453540 is a wasteful number, since it uses less digits than its factorization.

402453540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2450 (or 2445 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 27.

The square root of 402453540 is about 20061.2447270851. The cubic root of 402453540 is about 738.3097164349.

The spelling of 402453540 in words is "four hundred two million, four hundred fifty-three thousand, five hundred forty".